Chapter 536: Skin care
The RD-170 engine has four nozzles. That's because Lao Maozi couldn't control the unstable combustion of the liquid oxygen kerosene engine with large nozzles, so he simply adopted a four-combustion chamber design, which also required four nozzles. .
Of course, we cannot think that this engine is a combination of four engines. Although it has four combustion chambers, it only has one turbine pump. This is Laomaozi's characteristic coaxial pump. The single-stage turbine coaxially drives the oxidant pump. and fuel pump, pumping four injectors and thrust chamber simultaneously, very compact. No other country in the world can manufacture this turbine pump alone.
This also solves the problem of synchronous ignition of the four combustion chambers, pumping oil together and burning together. Moreover, in order to ensure complete combustion, it also has a special pre-combustion chamber, because it uses advanced staged combustion technology, which is also the only one in the world. When it comes to playing with fire, Lao Maozi is still very good.
In this way, a complete RD-170 engine has four combustion chambers and nozzles, a turbopump and two precombustion chambers. It has extremely powerful thrust and ranks first in the world, but no one uses it.
How to do it?
Crack it!
Cut it in half from the middle, leaving only two combustion chambers and nozzles. The precombustion chamber is also reduced to one. The turbine pump can reduce its power, thus achieving the purpose of reducing the thrust by half.
When hearing this, the American was obviously very happy: "If the thrust can be reduced by half, then our Lockheed company can purchase a batch!"
Lockheed!
Who says there is no support for our international defense exhibition? Americans are here, and they are also American military giants!
The person speaking at this time was Steve Jobs, Lockheed's rocket expert. Although he came in a private capacity, he could still speak on behalf of the company.
“I just don’t know if this rocket engine can make this kind of improvement?”
"Of course." At this time, another person had already walked over. He was Landovsky, the chief designer of the Power Machinery Research and Production Consortium. He patted his chest and assured: "Don't worry, we are very concerned about this engine. Familiar with it, it’s no problem to split it in half. If you have any ideas, we can go in and discuss it in detail.”
After speaking, Landowski looked at Qin Tao again: "Mr. Qin, you can come in together."
Qin Tao shook his head: "Forget it, I won't go in. Let's talk. I hope you can reach an agreement on cooperation and add luster to our defense exhibition."
Mr. Wu stared at it for a long time before finally sighing and leaving with the others.
"Mr. Qin, why don't you go in and join in?" Mr. Wu asked Qin Tao curiously: "This kind of big rocket is much stronger than the NK-33."
"Yes, this is the strongest existence in Lao Maozi's aerospace industry, but it is not something we can get involved in. Since we don't have this opportunity, there is no use looking at it, let's go."
Qin Tao is self-aware.
The NK-33 engine has never been installed and has never been actually tested. Until now, it is left in the warehouse to collect dust, so he can easily purchase it.
However, the RD-170 engine is different.
There is both cooperation and concern between Dongfang and Lao Maozi. Lao Maozi is not willing to hand over some advanced technologies to Dongfang, and rocket engines are one of them.
Want to buy RD-170 rocket engine? no way!
Want to buy the RD-180 that has been cut in half? No way!
Don't look at the happy transactions with the Americans. That's because they are sitting at the same height. In the world's aerospace camp, they all belong to the first echelon and have no idea of playing with the people behind.
Until 2018, there were more and more opposition voices in the United States, demanding that domestic rocket engines be started. They could no longer live by purchasing RD-180. Seeing that this engine could not be sold, Lao Maozi began to cooperate with Dongfang. For a while, rumors were flying that China would spend 50 billion to purchase this kind of engine and technology. But in the end it didn't happen.
On the road to aerospace, you have to rely on your own research. Others cannot be relied upon.
Although Americans say they don’t want it, their bodies are very real. No matter what doubts they have, they have not stopped purchasing rocket engines from Lao Maozi. It smells so good!
If Qin Tao gets involved, he will only come out disgraced.
If nothing else happens, Lockheed will have a fierce fight with the Power Machinery Research and Production Consortium. The two parties will hit it off and use the RD-180 engine on the Atlas 5 rocket. The price seems to be US$10 million per unit. Hundreds of units were later imported.
This is also a treasure of the aerospace industry of all mankind! Mr. Wu felt a little emotional that he did not have the ability and there was no need. After all, the thrust of this rocket engine was too strong and there was no need for him to build such a large rocket.
For the current manned space project, it is enough to use the Long March 2. For future space station plans, a new generation of the Long March 5 will be enough. There is no need to build a rocket of this level. When the manned moon landing project comes, There is already a new generation of technology in the country.
"Mr. Qin, Mr. Qin!" At this moment, Xu Zhengyang received the call, and then said to Qin Tao excitedly: "I just received the news that American Airlines Jet Company is inspecting the NK-33 engine, and Valentine has introduced it to them. I have learned some technical data, but I need to talk to you about the procurement negotiations."
American Airlines Jets?
Qin Tao also opened his eyes wide: "Okay, but I don't have time now. Tell them that after today's defense exhibition, let's find a place outside to chat while eating."
Wu Shengli was also extremely emotional: "You kid, you are so lucky. You can make a lot of money just by changing hands. Why don't you sell one million units?"
It takes less than half an hour to buy it back for one hundred thousand dollars and sell it for one million dollars. When did it become so easy to make money?
"One million?" Qin Tao smiled: "The RD-180 engine we are talking about with half of it cut off can be sold for ten million US dollars. Our engine with half the thrust of the RD-180 is still not sold. Four to five million? If it’s for good luck, we’ll sell him for $3.88 million!”
Qin Tao was also happy in his heart.
After the collapse of the Red Empire, Hewlett-Packard purchased the RD-120 liquid oxygen and kerosene engine, and American Airlines Jet purchased the NK-33 liquid oxygen and kerosene engine. However, the specific year is unknown. As for Lockheed's purchase of RD-180, some say it was 1995, while others say it was 1999.
Forget about those, now at least these projects are being carried out at the Capital International Defense Exhibition held in the East. This international defense exhibition in the East was held very successfully!
“There is nothing to see here. Let’s go to the aviation exhibition area next.” Qin Tao said: “It’s a pity that our J-15 fighter jet did not come to participate in the exhibition, otherwise it would definitely attract other people’s attention and be dazzling.”
“We have to save some face for Lao Maozi. Sukhoi is also here. It’s not good for us to publicly damage others’ lives like this.” Wu Shengli said.
Since the air show will be held in a few months, there is not much equipment in the aviation exhibition area of this international defense exhibition. Even if Sukhoi and Mikoyan Design Bureau came to participate in the exhibition, they would only bring models. The entire exhibition area Only the fighter jets produced by Dongfang were towed here.
J-7 and J-8 are frequent visitors to various exhibitions, so Jiao-ba naturally came to support them. If we want to say that the most eye-catching one in the entire exhibition area is definitely the J-31A.
Seat C in the indoor exhibition hall is occupied by the J-31A. This aircraft is now in actual condition, and it becomes even more attractive when it is on display. The limelight of the entire exhibition area is almost stolen by this aircraft. I don’t know how many reporters gathered outside it, snapping photos.
The appearance of this aircraft is completely different from ordinary aircraft. It has a diamond-shaped nose, butterfly-shaped wings, and the two vertical tails at the tail are tilted outward. It looks extremely special.
Of course, the most dazzling thing is its canopy, which is glowing with a golden color.
Zhao Dangsheng was still making introductions there, and now the introduction happened to be on the cockpit cover.
There was a time when China could not even produce a suitable cockpit windshield. The J-7, J-8 and even the Flying Leopard used in China still used a three-piece windshield, and the glass in front of the pilot was flat. It's not that the designers don't know how those partitions block light, but it's because the integrated windshield cannot be manufactured.
Looking at foreign countries, for example, the American F-16 has directly canceled the windshield and replaced it with a whole canopy. There is no partition frame, and the field of view is extremely wide.
Even when Su-27 production just started, windshields were not available domestically, and simple glass had to be imported. It was only recently that domestic companies completed the matching of cockpit covers and windshields.
Looking at the J-31A in front of us, it is even more emotional.
It does not remove the partition like the F-16 fighter. There is still a partition in front of the pilot, but because it opens forward, it is integral. The glass surface has yellow reflections, which makes people feel uncomfortable. Very surprised.
"In order to reduce the reflection of radar waves by the equipment inside the cockpit, we coated the entire cockpit cover with a gold film." Zhao Dangsheng introduced there: "We either don't do it, or we do our best if we do it. We must all use any method that can reduce radar reflection so that it has the smallest radar reflection area."
The canopy is actually plated with a gold film!
Actually, for an expensive fighter jet, this layer of gold is not much more expensive, but it immediately looks taller.
Golden cockpit, golden cockpit!
"As you can see, our aircraft is completely black. This is because we sprayed a layer of stealth coating on it. At the same time, because it is sprayed with a stealth coating, you can only view it from a distance and cannot touch it at close range. Otherwise, This may result in the leakage of our confidentiality."
A group of reporters expressed their understanding.
Of course, we cannot let these people touch it with their own hands, otherwise, the secret of the ordinary black paint will be leaked. The real stealth coating is still early. When this carrier-based aircraft is completed and delivered to users, it will be developed and qualified. That's about it for paint. Of course, the most important time point is still 1999.
Although we don’t have it yet, we still have to pretend that we do. We can’t be timid. Every time we show it to the public, there must be new results.
“Excuse me, is this aircraft ready to fly?”
"Yes, we are currently conducting a rolling experiment. When the rolling experiment is completed, the first flight will be completed. If nothing unexpected happens, we will definitely be able to complete the first flight before the end of this year. This will also become a symbol of our The J-31A project will enter a new era!"
Although there are still many questions about built-in bomb bays, weapon systems, etc., now, as long as it is a shell, a shell with an engine and a flight control system, it can fly!
In fact, no fighter jet can be complete during its first test flight. Only the domestic J-15, which was originally modified from a mature aircraft, can integrate various weapon systems during the test flight. Everything is provided.
"Mr. Qin, your progress is too fast. A failed product from the Yakovlev Design Bureau has reached this point when it comes to you. It's so rare." Qin Tao and several others were watching from the outside. At that time, someone came over and expressed emotion.
Qin Tao turned his head and saw a familiar face: Yemelyanov.
The Sukhoi Design Bureau originally sent a large number of people to the East. For others, this kind of international defense exhibition has to come all the way. For the Sukhoi Design Bureau, there is no need to go through any formalities. They and they can directly Came here from Factory 112 by train.
Qin Tao's face was a little ugly: "Mr. Yemelyanov, I am very dissatisfied with what you say. Our J-31A project is completely an innovative product that we independently developed. It is nothing like the Yakovlev It doesn’t matter whether we design or not, there are always people who can’t wait to find a foreign father for our products, which is belittling our spirit of independent innovation.”
Emelyanov was a little dumbfounded.
Who doesn’t know what independent innovation is? You poached the research and development team of the vertical take-off and landing fighter from the Yakovlev Design Bureau and formed the current team. Although you created a unique shell, the overall concept is still the same. What about the Yak-141? Now, you actually say it was independently developed?
However, this can be regarded as the tradition of the Orientals. They are still insisting that the J-15 has nothing to do with the Su-27. In order not to destroy the cooperation of the Su-27, they can only grit their teeth and admit it. In fact, they are still Very dissatisfied.
At this time, Wu Shengli also nodded with a smile: "Yes, Mr. Yemelyanov, I have personally watched the little progress of the J-31A project. I can guarantee you that this The project has nothing to do with the Jacques Design Bureau, I can guarantee that."
Regardless of Wu Shengli’s status, Yemelyanov could only nod: “Yes, I’m sorry, I was wrong.”
This guy is quite considerate. He admitted his mistake so quickly. Qin Tao nodded with satisfaction: "These news are all based on lies. Mr. Yemelyanov, if you encounter similar claims in the future, please correct us." !”
To clear your name? Yemelyanov felt extremely unhappy.
"The future era belongs to stealth machines." Qin Tao looked at Yemelyanov: "I wonder if the Sukhoi Design Bureau has made efforts in this direction? If we don't wear a cloak of stealth in the future, You can't even go out to meet people. Your fighter jets are very maneuverable, and the Su-37 frequently shines at air shows, and you are even developing models with better maneuverability to show your strong design capabilities. However, Pursuing only mobility will lead to a dead end."
Emelyanov's expression suddenly changed.
Qin Tao continued: "Of course, I am just a kind reminder. You can adopt it or continue to go your own way. Time will tell everything."
"Mr. Qin, what you said makes sense." Yemelyanov said: "But, you also know that we originally took the path of plasma stealth, and we did not have any technical reserves in terms of aerodynamic stealth. . It’s too late to start from scratch now.”
Not only can they not catch up with the Americans, but even the Mingzhou Group has to leave them far behind!
When it comes to maneuverability, no one can match Sukhoi's aircraft. Moreover, the Sukhoi Design Bureau is also building a unique S-37 fighter jet in the world. It adopts a forward-swept wing structure and has first-class maneuverability. It is expected to be launched next year. It will take off for the first time.
However, times have changed. What future fighter jets need is not outstanding maneuverability, but super-class stealth. If there is no stealth capability, it will be easy to be attacked by enemy missiles at long distances, and there will be no gain at all. Opportunity for close combat.
The Sukhoi Design Bureau is still working hard to improve mobility. This is completely wrong. However, a designer of Yemelyanov's level cannot yet decide the direction of the design bureau. Moreover, even if it is to develop a stealth machine , it’s already too late. How long will it take them to start from scratch?
"How can it be too late? As long as we make some changes on the basis of the Su-27 fighter, we can give it good stealth." Qin Tao said.
Directly modify it based on the Su-27?
Emelyanov became excited: "How to change it?"
“How about a face lift?”
This is definitely a layman’s statement, but Yemelyanov thought about it seriously. The Mingzhou Group can use the foundation of aircraft such as the Yak-141 to defeat the J-31A, which was built to be stealthy. Of course, we can also use the Su-27 to modify its appearance so that it can have stealth capabilities. , such changes are minimal, the mobility will not be reduced, and the workload is not high. It is definitely the best choice.
"Mr. Qin, your suggestion is good. I will report it to the design bureau." Yemelyanov said.
Is this good?
The others were confused.
When he separated from Lao Maozi and continued to wander around the defense exhibition, Wu Shengli couldn't help but asked: "Taozi, is your introduction useful to them?"
"Of course it works. When they see that we have improved the Yak-141 into the J-31A, of course they will be tempted. If we improve the Su-27 and change it into a stealth aircraft, then we can continue to keep pace with the Western world. .”
“Then can they succeed?” Mr. Wu asked. Aviation and aerospace are somewhat cross-disciplinary. He was bored, so he visited with everyone and took a look at Qin Tao’s style.
"Of course it's impossible." Qin Tao said straightforwardly: "It's easy to get skin rejuvenation on many planes, but it's difficult to get skin rejuvenation on some planes."
easy? Disaster?
Qin Tao is a shipbuilder and has only a superficial knowledge of aircraft building, but he has a very clear grasp of history.
"The Yak-141 originally had air intakes on both sides. We made some modifications and it is easy to change it to the current method. The Su-27 has belly air intake. No matter how it is modified, the engine layout cannot be changed. As long as there are two If the engine compartment remains unchanged, then the air inlet will remain unchanged. The engine can be directly seen from the air inlet, and the stealth performance will be greatly reduced."
The design of a stealth aircraft is very particular. The diamond-shaped nose and the parallelogram air inlet are a perfect match. The air inlet at the back has an S-shaped design, which can completely block the engine fan blades, which will strongly reflect electromagnetic waves.
Therefore, among the domestic fighter aircraft, it is difficult for the J-10 to become invisible, even if it has a bulge under its belly, it will have to start from scratch to build the J-20. However, Xiaolong is easy to change.
Just when he was thinking of this, Qin Tao stopped. Unknowingly, they walked to the booth of Factory 132. The booth that was supposed to be lively was now deserted and crowded!
The booth of the 132 Factory has a row of models, almost all of which are modified versions of the J-7, including the ultimate modified version of the J-7: the Super Seven.
The white-haired Mr. Tu sat in front of the booth and watched Qin Tao and others coming over with a wry smile on his face: "Leader Wu, Lao Wu, Mr. Qin, do you think my place here looks like the supply and marketing cooperative in previous years?"
In the past, supply and marketing cooperatives were in a monopoly position. If you wanted to buy something, you could only go to the supply and marketing cooperative. It has become the golden rule of the supply and marketing cooperative to never buy enough customers without reason. As long as you beat them, there is a reason.
In the 1980s, supply and marketing cooperatives began to decline, and in the 1990s, all supply and marketing cooperatives closed down.
Qin Tao shook his head: "Of course not. Your Factory 132 is the first to go out in the aviation industry and is a famous brand in the industry. The current loneliness is only temporary."
Factory 132 does nothing else but develop modifications of the J-7. The Xiaolong project is also a major modification of the J-7. The road it took was very difficult. From Grumman at the beginning to Mikoyan, the partners were After constant changes, the shape of the aircraft was gradually determined. Now this model looks almost like a small F-16.
However, the prospect of this aircraft is still not optimistic!
Originally, it survived in the cracks. Now, it is also competed by the J-31A, further deteriorating the living space.
"temporary?"
"Yes." Qin Tao said: "The biggest advantage of the Super Seven project is that it is cheap. There are always some countries that like bargains, especially Laoba. They also need to introduce production lines to produce by themselves. This is why it is better than the J-30 One A is a more suitable place for Lao Ba.”
Lao Tu opened his eyes wide.
(End of this chapter)